diff --git a/app/main.py b/app/main.py
index e69de29..5dfe2c7 100644
--- a/app/main.py
+++ b/app/main.py
@@ -0,0 +1,11 @@
+from fastapi import FastAPI
+
+from .routers import users
+
+app = FastAPI()
+
+app.include_router(users.router)
+
+@app.get("/")
+async def root():
+    return {"message": "Hello World !"}
\ No newline at end of file
diff --git a/app/models/__init__.py b/app/models/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/models/users.py b/app/models/users.py
new file mode 100644
index 0000000..b3da0b6
--- /dev/null
+++ b/app/models/users.py
@@ -0,0 +1,12 @@
+from pydantic import BaseModel
+from pydantic_mongo import AbstractRepository, ObjectIdField
+
+
+class Users(BaseModel):
+    id: ObjectIdField = None
+    username: str
+
+
+class UsersRepository(AbstractRepository[Users]):
+    class Meta:
+        collection_name = users
\ No newline at end of file
diff --git a/app/routers/__init__.py b/app/routers/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/requierements.txt b/requierements.txt
index 8e0578a..13a6b2c 100644
--- a/requierements.txt
+++ b/requierements.txt
@@ -1,2 +1,3 @@
 fastapi
-uvicorn[standard]
\ No newline at end of file
+uvicorn[standard]
+pydantic-mongo
\ No newline at end of file